package com.first.dao;

import com.first.entity.OOrderWj;
import com.first.util.Echarts;
import com.first.util.EchartsDate;

import java.util.List;

public interface StatisticsDao {


    /**
     * 销量统计
     * @param
     * @return
     */
    List<Echarts> querySales(Echarts echarts,String start,String end);


    /**
     * 查看出图书的销售额和采购额
     * @param echarts
     * @param start
     * @param end
     * @return
     */
    List<Echarts> queryProfit(Echarts echarts,String start,String end);


    /**
     * 查看库存
     * @return
     */
    List<EchartsDate> getStock(EchartsDate echarts);



}
